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石棉水泥管具有强度高、摩擦阻力小、导电性弱、导热性低、不生锈、成本低、重量轻等优点,但由于它是一种脆性材料,抗冲击性能较差,受到冲击震动,往往会出现明显的伤痕,有的外表虽无损伤,但强度降低。据试验,耐24公斤/平方厘米水压的石棉水泥管,从60厘米高处,落于土质地面时,产品就会断裂;耐20公斤/平方厘米的石棉水泥管从40厘米高处一次跌落于土质地面后,重新进行耐压试验,当
Asbestos cement pipe has the advantages of high strength, low frictional resistance, weak electrical conductivity, low thermal conductivity, no rust, low cost, light weight, etc. However, since it is a brittle material, it has poor impact resistance and is subject to shock and vibration. There are often obvious scars, and some are not damaged, but their strength is reduced. According to tests, asbestos-cement pipes with a resistance to water pressure of 24 kg/sq. cm will fall from a height of 60 cm and fall on earthy ground, and the product will break; a 20-kilogram/cm 2 asbestos-cement pipe will drop once from a height of 40 cm. After earthy ground, withstand pressure test, when